向北

It expanded to 106119ha in 1973, descented to 99167ha in 1987, backed up to 112440ha, and attained the max value in history—123170ha in 1998 and descent to 109934ha again in 2001. GIS overlaying analysis shows that, the spatial change of Minqin Oasis had the different characteristics in different stage in the last 50 years: at the end of 50's to the beginning of 70%, oasis expandation Was performed by extension of origin oasis; the atrophia of oasis from the beginning from 70's to the 80's was performed by increasing of non-oasis spot pieces of inner part for oasis; the main performance of keeping on expanding of oasis from late 80's to late 90's is outside extension of Baqu oasis near the upper stream, with increased oasis area in interior of hungriness and increased area of non-cultivation in Huqu oasis in the north. From 1998 to 2001, opening up wideness in interior of hungriness continued, but hnngrinessization of oasis became worse. The oases in the Minqin Basin developed from small to large and back to small in terms of area changes, and from south to north then to south in terms of spatial changes.

绿洲分布图的GIS叠加覆盖分析表明，近50年来民勤绿洲的空间变化在不同阶段有不同的特征：50年代末至70年代初，绿洲扩展主要表现为已有绿洲的外延式扩大；70年代初至80年代后期的绿洲萎缩，主要表现为绿洲内部非绿洲斑块增加；80年代后期至90年代后期的持续扩展，主要表现为靠近上游的坝区绿洲向外围扩展和荒漠腹地绿洲面积的增加，而北部湖区绿洲弃耕面积不断扩大；98年至2001年，绿洲荒漠腹地的开荒还在继续，但湖区的绿洲荒漠化还在进一步加剧。50年来民勤绿洲的发展总体上经历了一个面积由小到大再到小，空间位置上从南而北再向南的迁移过程。

The methods of hydrocarbon generation and carbon isotopic kinetics are studied in Sulige Gas Field, Yulin Gas Field and Shenmu Gas Field, which indicate that the gas is mainly from Carboniferous-Permian coaly stratum in the south or southwest of the three gas fields; the hydrocarbon generation of source rock is firstly originated from 150Ma or so in Dingbian and its south area, and is successive from south to north and from west to east; the migration directions of natural gas are regionally from southwest to northeast, and partially from bottom to top.

采用生烃动力学和碳同位素动力学的方法，通过对苏里格气田、榆林气田和神木气田的剖析，认为这3个气田的气源主要来自其南部或西南部的石炭-二叠系的煤系地层；烃源岩生烃始于150Ma左右，出现在定边及以南的气源岩区，并存在由南向北、由西向东推进的趋势；天然气区域运移方向是由西南向东北，局部运移方向是由下向上。

The earthquakes mainly show normal or strike-slip faults in Yajiang, North-triangle and west o f Chengdu-block areas, indicating that the vertical forces have been pl aying an important role in the source stress fields, while the earthquake mainly show reverse or strike-slip faults in Baoxing-Tianquan area, with the horizon tal compone nts of the principal pressure stress axis identical to the south-west directi on to which the shallow mass was moving.

雅江、 北三角和成都地块西部3个分区，地震破裂以正断层、走滑型为主，表明垂向作用力在震源应力场中发挥了不可忽视的作用宝兴天全地区的地震以逆断层、走滑型为主，其主压应力轴水平分量与浅层物质运移的南西方向一致。

The rock belt are composed of malignite, nepheline gabbro, shonkinite, diopside-sienite, hornblende sienite, amphibole-monzonite,granodiorite-granophyre, kaligranite-porphyry, fraidronite, kersanton, precious garnet, olivine alkali-lamprophyre, alkalic-pyroxenolite, alkalic-basalt, latite and trachyte. And the lithofacies of the potassic rock zone include plutonic intrusion, hypabyssal intrusion and eruption.

本文的研究范围是哀牢山-金沙江钾质碱性岩带，该带位于我国西南三江地区的扬子板块和中缅板块三江褶皱区间的缝合带和多个地体边界带，由喜马拉雅期钾质富碱岩浆岩组成；从北往南由新疆塔什库尔干→沱沱河沿→青海囊谦→西藏江达→云南剑川→下关，向南到金平，中国境内该岩带延长达3700km，且向南延至越南境内，平面上岩带呈反&S&形的线形分布特点。

From the isohyetal maps, we can display the spatial distribution of rainfall caused by typhoons in Nan Shih Creek watershed.

由等雨量线图显示，南势溪集水区台风降雨之分布分别由东向西以及南向北之方向递减；台风降雨中心多发生於福山雨量站所在之区域，降雨量则由福山雨量站向东朝下盆雨量站方向递减；另外，位於本区北端之大桶山雨量所处之区域，则是另一处发生明显降雨空间变化的地区，故台风降雨在南势溪集水区内的分布具有空间变异之特性。

From the analysis of the faults distributing characters,the main part of faults have two group normal fault system with "lambdoidal shape"and trending towards to NE and NS separately.

从断裂展布特征分析，其构造主体部位为北东向和近南北向两组正断层组成的&人&字形断裂系统，向东收敛，断层非常发育。

Nevertheless, the weakening ridge and the nearby 90W may serve to slow down 03W's westward movement, and in longer term poleward movement can be expected.

虽然如此，在 03W 东面的 90W 跟副高预期的减弱将使 03W 的向西移动分量减低，中长期将令该系统向偏北移动。

In the environment of pressure stress field that caused by the movement toward north of India, Australia and Pacific plates to the south and east, a strong intracontinental subduction overprinted on the deep delamination. of Dabie orogenic belt, and the subducting sediments of Yangtse plate were melted to form the "syncollision" peraluminous granite of this epoch.

在中国大陆南部和东部的印度、澳大利亚和太平洋板块的北向运动所造成的NS向挤压应力场环境中，大别造山带在深部拆沉作用的基础上，又叠加了一次强烈的陆内俯冲作用，俯冲的扬子板块沉积物质熔融形成该期&同碰撞&过铝质花岗岩。

This paper introduces an analytic method of quick north seeker , whose principle is to use gyro to sense the component value of the angle-rate of the earth rotation, with which the northern azimuth angle between the referenced shaft of carrier and actual ...

本文提出一种基于解析的快速寻北方法，其原理是利用陀螺仪敏感地球的自传角速率分量，并由此计算出载体的参考轴向与真北方向的夹角，即偏北角。

This paper introduces an analytic method of quick north seeker , whose principle is to use gyro to sense the component value of the angle-rate of the earth rotation, with which the northern azimuth angle between the referenced shaft of carrier and actual north angle can be measured.

本文提出一种基于解析的快速寻北方法，其原理是利用陀螺仪敏感地球的自传角速率分量，并由此计算出载体的参考轴向与真北方向的夹角，即偏北角。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。